codership/documentation — pull request #35 by grooverdan (2014-12-20 06:20:09+00:00)
Title: innodb_flush_log_at_trx_commit=0 is better than =2

http://openquery.com.au/blog/innodbflushlogsontrxcommit-galeracluster
shows why =0 is better than =2. Other examples on the same page use=0
so may as well use =0 here too.